Cremona's table of elliptic curves

Curve 28224ca1

28224 = 26 · 32 · 72



Data for elliptic curve 28224ca1

Field Data Notes
Atkin-Lehner 2+ 3- 7- Signs for the Atkin-Lehner involutions
Class 28224ca Isogeny class
Conductor 28224 Conductor
∏ cp 16 Product of Tamagawa factors cp
deg 12288 Modular degree for the optimal curve
Δ -1024192512 = -1 · 212 · 36 · 73 Discriminant
Eigenvalues 2+ 3-  2 7-  4 -6  4 -6 Hecke eigenvalues for primes up to 20
Equation [0,0,0,-84,-1568] [a1,a2,a3,a4,a6]
Generators [21:77:1] Generators of the group modulo torsion
j -64 j-invariant
L 6.4277495507904 L(r)(E,1)/r!
Ω 0.66849619028103 Real period
R 2.4038093426113 Regulator
r 1 Rank of the group of rational points
S 1 (Analytic) order of Ш
t 2 Number of elements in the torsion subgroup
Twists 28224cc1 14112cd1 3136m1 28224cj1 Quadratic twists by: -4 8 -3 -7


Data from Elliptic Curve Data by J. E. Cremona.
Design inspired by The Modular Forms Explorer by William Stein.

Part of Computational Number Theory
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